Výsledky vyhledávání - "Jonathan Bajohr"

Sequential Pd 0 ‐ and Pd II ‐Catalyzed Cyclizations: Enantioselective Heck and Nucleopalladation Reactions

Autor: Jonathan Bajohr, Ramon Arora, Andrew Whyte, Mark Lautens, Alexa Torelli

Publikováno v: Angewandte Chemie. 133:20393-20398

An enantioselective consecutive cyclization/coupling process, catalyzed by palladium is reported. Stereoinduction arises from an enantioselective carbopalladation, generating an intermediate which promotes a nucleopalladation step. The dual cyclizati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b5e36a9120d03d6918a1cb213167472
https://doi.org/10.1002/ange.202106518

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Cycloisomerization of Carbamoyl Chlorides in Hexafluoroisopropanol: Stereoselective Synthesis of Chlorinated Methylene Oxindoles and Quinolinones

Autor: Bijan Mirabi, Andrew Whyte, Anji Zhang, Mark Lautens, José F. Rodríguez, Jonathan Bajohr

Publikováno v: Angewandte Chemie International Edition. 60:18478-18483

Hexafluoroisopropanol (HFIP) was employed as an additive for the generation of 3-(chloromethylene)oxindoles via the chloroacylation of alkyne-tethered carbamoyl chlorides. This reaction avoids the use of a metal catalyst and accesses products in high

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1748b5f6e8862a7c60289f4b382bc003
https://doi.org/10.1002/anie.202103323

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Palladium-Catalyzed Three-Component Dearomatization/Sulfonylation Cascade

Autor: Jonathan Bajohr, Matthias D. Böhme, Jiacheng Gao, F. Ekkehardt Hahn, Mark Lautens

Publikováno v: Organic letters. 24(21)

The diastereoselective synthesis of sulfonylated indolines is reported. A palladium-catalyzed dearomative sulfination of (aza)indole-tethered aryl iodides generates reactive benzylic sulfinates. These intermediates react with electrophiles in a one-p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::324820d13a9e7675766902ecb9ef4e30
https://pubmed.ncbi.nlm.nih.gov/35604037

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Asymmetric Synthesis of Boryl-Functionalized Cyclobutanols

Autor: Mark Lautens, Jonathan Bajohr, Liher Prieto, Alexa Torelli, Bijan Mirabi, Andrew Whyte

Publikováno v: ACS Catalysis. 9:9253-9258

A diastereo- and enantioselective synthesis of boron-containing cyclobutanols is reported. We exploit an enantioselective borylcupration to generate a chiral benzylic copper intermediate that is in...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0896955167a7190b17d080a03adccd03
https://doi.org/10.1021/acscatal.9b03216

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Sequential Pd

Autor: Andrew, Whyte, Jonathan, Bajohr, Ramon, Arora, Alexa, Torelli, Mark, Lautens

Publikováno v: Angewandte Chemie (International ed. in English). 60(37)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::b74fa9fbbe4aae8b8a8766824254e3fd
https://pubmed.ncbi.nlm.nih.gov/34240542

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Palladium-Catalyzed Domino Heck/Sulfination: Synthesis of Sul-fonylated Hetero- and Carbocyclic Scaffolds Using DABCO–Bis(sulfur dioxide)

Autor: Jonathan Bajohr, Mark Lautens, Abdoul G. Diallo, Jean-Luc Renaud, Sylvain Gaillard, Andrew Whyte

Publikováno v: Organic Letters
Organic Letters, American Chemical Society, In press, ⟨10.1021/acs.orglett.1c0071⟩
Organic Letters, American Chemical Society, 2021, 23 (7), pp.2797-2801. ⟨10.1021/acs.orglett.1c00716⟩

International audience; The synthesis of a broad variety of hetero- and carbocyclic scaffolds via a Pd-catalyzed domino Heck/SO¬2 insertion reaction is reported. This reaction utilizes DABSO, a safe and easy-to-handle alternative to SO2 gas. The rea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed0b52be79c58527d62c0bdbf59944db
https://hal-normandie-univ.archives-ouvertes.fr/hal-03164637

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Enantioselective Cobalt‐Catalyzed Intermolecular Hydroacylation of 1,6‐Enynes

Autor: Alexa Torelli, Andrew Whyte, Jonathan Bajohr, Mark Lautens

Publikováno v: Angewandte Chemie.

We report a cobalt-catalyzed hydroacylation of 1,6-enynes with exogenous aldehydes in a domino sequence to construct enantioenriched ketones. The products were obtained in good yields with excellent regio-, diastereo-, and enantioselectivity. Further

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4579d15f0ce4ae332cf726e2159d4367
https://doi.org/10.1002/ange.202006716

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Palladium-Catalyzed Disilylation and Digermanylation of Alkene Tethered Aryl Halides: Direct Access to Versatile Silylated and Germanylated Heterocycles

Autor: Austin D. Marchese, Andrew Whyte, Mark Lautens, Marco Wollenburg, Jonathan Bajohr, Frank Glorius

Publikováno v: Organic letters. 22(9)

A method for the palladium-catalyzed disilylation and digermanylation of aryl halides bearing a tethered alkene has been developed. The mechanism is thought to proceed via Heck-type cyclization, fo...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3ad6f5ae63615a18cc8153b69a5ccb0
https://pubmed.ncbi.nlm.nih.gov/32309953

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